The NFL 2012 free-agency period begins on Tuesday and the Denver Broncos definitely have a number of needs.

The Broncos had one of their most exciting seasons in recent history in 2012 but there are clearly a number of holes to fill.

The Broncos ranked No. 23 in total offense averaging just 152 yards per game.

The Broncos also need help on defense where they gave up over 24 points per game ranking them No. 24th in the league.

So who should the Broncos target?

Let me say this first and foremost, if the Broncos do sign former Colts quarterback Peyton Manning (pictured) it will change a number of targets for this team. Manning's skill set being vastly different from the Broncos' current starter Tim Tebow would dictate a new direction on the offensive side of the ball.

I have chosen to calculate the Broncos needs based on their current roster without Manning. This is simply because no one knows if Manning is healthy and as a result if he is truly a viable candidate.

All that being said, let's take a look at the five players the Broncos need to pursue the most.

5. Mike Brisiel

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The Denver Broncos have a young offensive line that seems to be improving. However, there is room for some improvement.

Left guard Zane Beadles struggled at times in 2012. He allowed seven sacks and was guilty of a number of penalties as well.

The Broncos don't need to give up on Beadles but they do need to look for some depth.

Mike Brisiel of the Houston Texans is a solid run blocking guard who can improve the run game. Brisiel is only 29 years old and can still get better.

4. Dennis Dixon

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Dennis Dixon may never be an NFL starting quarterback.

The Broncos don't need a starter though, they need a solid backup who can help mentor Tebow and step in only if needed.